Rita's serves up a pretty good custard (although, it seems like it was better five or six years ago than it is now) and has generally friendly service. The line can sometimes grow extremely long, and waits of over 20 minutes are fairly common during peak hours in the summer. The prices are a bit above what they seem like they should be, but there also aren't many places in Pittsburgh to get custard. Rita's also is only open for about half the year, and it always seems like I'm into custard in the winter and, therefore, out of luck.
I wish I had more to say about Rita's or that I could praise it in some significant way. Unfortunately, I think it's gone downhill in the past half decade, and at this point, I'm happier heading to one of the growing population of fancy frozen yogurt shops and ignoring Rita's altogether.